private void initDigitalFilter() { int error_code; FilterCutoffFreq digitalHPF = FilterCutoffFreq.FilterPassAway; FilterCutoffFreq digitalLPF = FilterCutoffFreq.FilterPassAway; error_code = GetRecieverDAQ.DigitalHPF(SelectAscan.sessionIndex, SelectAscan.port, ref digitalHPF); if (error_code != 0) { return; } error_code = GetRecieverDAQ.DigitalLPF(SelectAscan.sessionIndex, SelectAscan.port, ref digitalLPF); if (error_code != 0) { return; } cboDHPF.SelectedIndex = (int)digitalHPF; cboDLPF.SelectedIndex = (int)digitalLPF; }